OK so probably it should be clarified that the author has a great blog on PostgreSQL including a series called "Waiting for PostgreSQL $VERSION" where he talks

OK so probably it should be clarified that the author has a great blog on PostgreSQL including a series called "Waiting for PostgreSQL $VERSION" where he talks of highlights in the edition that would only appear later at the time of writing. Looking back, these are interesting descriptions of prominent changes in the next few releases, and most of these entries are still valid today, i.e. most features didn't change much.